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https://issues.apache.org/jira/browse/IGNITE-23716?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kirill Tkalenko updated IGNITE-23716:
-------------------------------------
Description:
IGNITE-23303 addressed some of condended lock usages, but not all.
1. -LazyStripedExecutors#executorFor - is called on every incoming message,
and they might be millions.- Done in ticket IGNITE-23796.
2. -ClockWaiter's busyLock can be removed, because it delegates to tracker
which already has (already optimized) busy locks.- Will be done in IGNITE-23811
3. -IgniteAttachmentLock writes to shared location both for sync and async
paths - it should be striped in some way.- Done in IGNITE-23779.
4. StripedRWLock used in PendingComparableValuesTracker and ReplicaManager
doesn't check if write lock is already held
5. -IgniteSpinBusyLock duplicates VersatileReadWriteLock in many aspects and
vice versa. I believe ISBL can be replaces with VRWL.- Will be done in
IGNITE-23779.
See for example org.apache.ignite.internal.util.IgniteUtils#inBusyLockAsync
NOTE: don't forget to check results with UpsertKvBenchmark
was:
IGNITE-23303 addressed some of condended lock usages, but not all.
1. -LazyStripedExecutors#executorFor - is called on every incoming message,
and they might be millions.- Done on ticket IGNITE-23796.
2. -ClockWaiter's busyLock can be removed, because it delegates to tracker
which already has (already optimized) busy locks.- Will be done in IGNITE-23811
3. -IgniteAttachmentLock writes to shared location both for sync and async
paths - it should be striped in some way.- Will be done in IGNITE-23779.
4. StripedRWLock used in PendingComparableValuesTracker and ReplicaManager
doesn't check if write lock is already held
5. -IgniteSpinBusyLock duplicates VersatileReadWriteLock in many aspects and
vice versa. I believe ISBL can be replaces with VRWL.- Will be done in
IGNITE-23779.
See for example org.apache.ignite.internal.util.IgniteUtils#inBusyLockAsync
NOTE: don't forget to check results with UpsertKvBenchmark
> Improve contented locks usage
> -----------------------------
>
> Key: IGNITE-23716
> URL: https://issues.apache.org/jira/browse/IGNITE-23716
> Project: Ignite
> Issue Type: Improvement
> Reporter: Alexey Scherbakov
> Assignee: Kirill Tkalenko
> Priority: Major
> Labels: ignite-3
>
> IGNITE-23303 addressed some of condended lock usages, but not all.
> 1. -LazyStripedExecutors#executorFor - is called on every incoming message,
> and they might be millions.- Done in ticket IGNITE-23796.
> 2. -ClockWaiter's busyLock can be removed, because it delegates to tracker
> which already has (already optimized) busy locks.- Will be done in
> IGNITE-23811
>
> 3. -IgniteAttachmentLock writes to shared location both for sync and async
> paths - it should be striped in some way.- Done in IGNITE-23779.
> 4. StripedRWLock used in PendingComparableValuesTracker and ReplicaManager
> doesn't check if write lock is already held
> 5. -IgniteSpinBusyLock duplicates VersatileReadWriteLock in many aspects and
> vice versa. I believe ISBL can be replaces with VRWL.- Will be done in
> IGNITE-23779.
> See for example org.apache.ignite.internal.util.IgniteUtils#inBusyLockAsync
> NOTE: don't forget to check results with UpsertKvBenchmark
>
>
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